FPGA IIR lowpass filter

[DSP_FPGA]

Hello everyone,

I have got a trial version of Labview8.5.

I wanted to ask if it is possible to implement an IIR filter on FPGA?

Thanks in advance,

Kamran

[AdnanZ]

Hi Kamran,

LabVIEW FPGA 8.5 does include a Butterworth filter function (1st, 2nd and 4th order) and a Notch filter function (2nd order) in the FPGA palette. You can configure them directly using a dialog on your FPGA diagram. The cutoff may not be quite as sharp as you want but it could be an option for you to consider. Once you have configured the filter VI, you have the option of opening up the subVI with the code that is generated based on your filter parameters (by right-clicking on the express VI and clicking 'Open Front Panel'), which would allow you to further configure the code directly.